There is an application, you need to create an ImageView so that it is displayed while the program is running.
Update
In general, there are 5 activations, you need to make sure that ImageView is displayed on all activations before the application is running. ImageView should not be dependent on activation. That is, when I switch between activations, ImageView should be displayed on top of all activations. In short, as the Taskbar along with the START button and the tray in Windows.